For now, Cynthia recommends everyone at least avoid the EWG (Environmental Working Group) Dirty Dozen List, which lists the 12 most heavily chemically sprayed fruits and veggies that you must replace with organic. The EWG also has a Clean Fifteen List, the 15 least chemically sprayed fruits and veggies, which indicates that it's safe to pinch pennies by purchasing a Clean Fifteen avocado instead of an organic avocado.
Learn more: http://www.naturalnews.com/048978_organic_food_pesticide_contamination_agricultural_chemicals.html#ixzz4BNgcgTIG